In the following example we will im[ple]ment support for [fenced code blocks][] which are part of the [github flavored markdown][gfm]. [fenced code blocks]: https://help.github.com/articles/github-flavored-markdown#fenced-code-blocks "Fenced code block feature of github flavored markdown" [gfm]: https://github.com [unused]: https://github.com/unused hey, check [this]. [this]: https://github.com/cebe/markdown ref on end of line [this] next line. this is a [multi line] reference. this is a [Link with][multi line] reference. [multi line]: http://example.com [ ] [not a] reference